<template>
  <h2>祖</h2>
  <p>{{ data }}</p>
  <hr>
  <DC></DC>
  
</template>

<script setup lang="ts">
   import DC from './child/Demo9Child.vue' 
   import {provide} from 'vue'
   let data = "wjh like blow"
   provide('blow',data)


</script>